HexWalk 2.0.0

A major release. HexWalk now ships a built-in binary scanner and
extractor (HexDig) so you no longer need to install binwalk
separately for the most common workflows. The project has also moved to
Qt 6 and to a single CMake build system across all platforms.

✨ Highlights

• Built-in HexDig scanner — embedded; no external setup required.
  Detects and extracts a wide range of file formats. Binwalk is still
  selectable as an alternative engine under Options → Analyzer if you
  prefer it.
• Qt 6 — modernised GUI based on Qt 6 (Core, Gui, Widgets, Charts).
• CMake build system — replaces qmake/.pro everywhere (Linux,
  macOS, Windows/MinGW).
• Official AppImage — single-file HexWalk-2.0.0-x86_64.AppImage
  for portable Linux use.
• Standalone HexDig CLI — the scanner is also shipped as a separate
  command-line tool for batch scans, JSON output, and recursive
  extraction.

🧩 HexDig — supported formats

• Compression: GZIP, BZIP2, LZMA, XZ, 7Z
• Archives: ZIP, RAR, TAR, CPIO, CAB, ARJ, DEB
• Filesystems: EXT2/3/4, SquashFS, CRAMFS, ROMFS, JFFS2, UBI, FAT
• Executables / object: ELF, PE, Mach-O (new)
• Firmware: U-Boot uImage, Device Tree (DTB), Android Sparse
• Other: PNG, JPG, GIF, BMP, SVG, PDF, MBR, AES S-boxes, CRC tables,
  copyright strings

🛡 Stability & safety

• Hardened the CramFS, DTB, TAR, UImage, CPIO, SquashFS and Mach-O
  parsers so a false-positive match on a corrupt or arbitrary file no
  longer reads past the buffer (fixes a SIGSEGV reproducible when
  scanning Mach-O binaries).
• Rewrote the SquashFS parser to read v4 superblock fields at the
  correct offsets — block size, version and total size are now reported
  accurately.
• Tightened EXT4 validation: random binaries that happen to contain
  0x53 0xEF no longer get reported as fictitious filesystems with
  multi-billion-block superblocks.

🐛 Bug fixes

• Fixed a crash in the Diff dialog on certain inputs.
• 7-Zip path lookup now walks $PATH for both 7z (Debian/Ubuntu) and
  7zz (upstream 7-Zip package), so extraction works out of the box on
  Debian systems where only 7z is installed.

⚠️ Migration notes

• Qt 5 is no longer supported as a build target. Distributors should
  use Debian unstable / Ubuntu 24.04+ where Qt 6 is available.
• External binwalk is no longer required, but remains supported.
  Switch engines under Options → Analyzer.
• The .pro files have been removed; build with:

  cmake -B build -DCMAKE_BUILD_TYPE=Release
  cmake --build build -j